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16f859dafd
This makes life easier when calling e.g. `saul_reg_write()` with data stored in flash. As now the signatures for reading and writing differ (in that `const` qualifier only), `saul_notsup()` is split into `saul_write_notsup()` and `saul_read_notsup()`. However, one is implemented as a symbol alias of the other, so that ROM consumption remains unchanged.
45 lines
979 B
C
45 lines
979 B
C
/*
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* Copyright (C) 2019 Inria
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*
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* This file is subject to the terms and conditions of the GNU Lesser
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* General Public License v2.1. See the file LICENSE in the top level
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* directory for more details.
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*/
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/**
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* @ingroup drivers_ds75lx
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* @{
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*
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* @file
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* @brief SAUL adaption for DS75LX device
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*
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* @author Alexandre Abadie <alexandre.abadie@inria.fr>
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*
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* @}
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*/
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#include <string.h>
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#include "saul.h"
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#include "ds75lx.h"
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static int read_temperature(const void *dev, phydat_t *res)
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{
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ds75lx_wakeup((const ds75lx_t *)dev);
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if (ds75lx_read_temperature((const ds75lx_t *)dev, &res->val[0]) != DS75LX_OK) {
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ds75lx_shutdown((const ds75lx_t *)dev);
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return -ECANCELED;
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}
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ds75lx_shutdown((const ds75lx_t *)dev);
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res->unit = UNIT_TEMP_C;
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res->scale = -2;
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return 1;
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}
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const saul_driver_t ds75lx_temperature_saul_driver = {
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.read = read_temperature,
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.write = saul_write_notsup,
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.type = SAUL_SENSE_TEMP
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};
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